oj.uz

Submission #938798

# Submission time Handle Problem Language Result Execution time Memory
938798 2024-03-05T14:33:24 Z User0069 Klasika (COCI20_klasika) C++17
33 / 110
 46 ms 50000 KB 
#include<bits/stdc++.h>
#define taskname ""
#define el '\n'
#define fi first
#define sc second
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
//#define int ll
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
#define Faster ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
const int maxn=1e5+1;
const int INF=1e9;
int n=1,q,a[maxn],b[maxn],in[maxn],out[maxn],cur,v[maxn];
string s[maxn];
vector<int> adj[maxn];
struct trie
{
    struct node
    {
        node* child[2];
        node()
        {
            child[1]=child[0]=NULL;
        }
    };
    node* root;
    trie()
    {
        root=new node();
    }
    void add(int x)
    {
        node* cur=root;
        for(int i=30;i>=0;i--)
        {
            int c=(x>>i)&1;
            if(cur->child[c]==NULL) cur->child[c]=new node();
            cur=cur->child[c];
        }
    }
    int get(int x)
    {
        int ans=0;
        node* cur=root;
        for(int i=30;i>=0;i--)
        {
            int c=(x>>i)&1;
            if(cur->child[1^c]!=NULL)
            {
                ans+=(1<<i);
                cur=cur->child[1^c];
            }
            else if(cur->child[c]!=NULL) cur=cur->child[c];
            else return 0;
        }
        return ans;
    }
};
struct segtree
{
    trie ST[4*maxn];
    void update(int id,int cl,int cr,int pos,int val)
    {
        if(cl>pos||cr<pos) return;
        ST[id].add(val);
        if(cl==cr) return;
        int mid=(cl+cr)/2;
        if(pos<=mid) update(2*id,cl,mid,pos,val);
        else update(2*id+1,mid+1,cr,pos,val);
    }
    int get(int id,int cl,int cr,int l,int r,int val)
    {
        if(cl>r||cr<l) return 0;
        if(cl>=l&&cr<=r) return ST[id].get(val);
        int mid=(cl+cr)/2;
        return max(get(2*id,cl,mid,l,r,val),get(2*id+1,mid+1,cr,l,r,val));
    }
}f;
void dfs(int x,int par)
{
    in[x]=++cur;
    v[x]=v[par]^v[x];
    for(int y:adj[x])
    {
        dfs(y,x);
    }
    out[x]=cur;
}
signed main()
{
    if (fopen(taskname".INP","r"))
    {
        freopen(taskname".INP","r",stdin);
        freopen(taskname".OUT","w",stdout);
    }
    Faster
    cin>>q;
    for(int i=1;i<=q;i++)
    {
        cin>>s[i]>>a[i]>>b[i];
        if(s[i]=="Add")
        {
            adj[a[i]].push_back(++n);
            v[n]=b[i];
        }
    }
    dfs(1,0);
    int cc=1;
    f.update(1,1,n,1,0);
    for(int i=1;i<=q;i++)
    {
        if(s[i]=="Add")
        {
            ++cc;
            f.update(1,1,n,in[cc],v[cc]);
        }
        else
        {
            cout<<f.get(1,1,n,in[b[i]],out[b[i]],v[a[i]])<<"\n";
        }
    }
//    for(int i=1;i<=n;i++) cout<<v[i]<<" ";

}

Compilation message

klasika.cpp: In function 'int main()':
klasika.cpp:97:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |         freopen(taskname".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen(taskname".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23644 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 13 ms 24156 KB Output is correct
4 Correct 16 ms 24412 KB Output is correct
5 Correct 14 ms 23652 KB Output is correct
6 Correct 13 ms 23760 KB Output is correct
7 Correct 13 ms 24408 KB Output is correct
8 Correct 16 ms 24408 KB Output is correct
9 Correct 13 ms 23644 KB Output is correct
10 Correct 12 ms 23900 KB Output is correct
11 Correct 13 ms 24156 KB Output is correct
12 Correct 13 ms 24412 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23644 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 13 ms 24156 KB Output is correct
4 Correct 16 ms 24412 KB Output is correct
5 Correct 14 ms 23652 KB Output is correct
6 Correct 13 ms 23760 KB Output is correct
7 Correct 13 ms 24408 KB Output is correct
8 Correct 16 ms 24408 KB Output is correct
9 Correct 13 ms 23644 KB Output is correct
10 Correct 12 ms 23900 KB Output is correct
11 Correct 13 ms 24156 KB Output is correct
12 Correct 13 ms 24412 KB Output is correct
13 Correct 17 ms 26712 KB Output is correct
14 Correct 20 ms 30556 KB Output is correct
15 Correct 24 ms 34716 KB Output is correct
16 Correct 28 ms 38748 KB Output is correct
17 Correct 16 ms 26460 KB Output is correct
18 Correct 20 ms 30300 KB Output is correct
19 Correct 24 ms 34408 KB Output is correct
20 Correct 27 ms 38336 KB Output is correct
21 Correct 17 ms 26716 KB Output is correct
22 Correct 20 ms 30348 KB Output is correct
23 Correct 24 ms 34388 KB Output is correct
24 Correct 26 ms 38492 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 46 ms 50000 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23644 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 13 ms 24156 KB Output is correct
4 Correct 16 ms 24412 KB Output is correct
5 Correct 14 ms 23652 KB Output is correct
6 Correct 13 ms 23760 KB Output is correct
7 Correct 13 ms 24408 KB Output is correct
8 Correct 16 ms 24408 KB Output is correct
9 Correct 13 ms 23644 KB Output is correct
10 Correct 12 ms 23900 KB Output is correct
11 Correct 13 ms 24156 KB Output is correct
12 Correct 13 ms 24412 KB Output is correct
13 Correct 17 ms 26712 KB Output is correct
14 Correct 20 ms 30556 KB Output is correct
15 Correct 24 ms 34716 KB Output is correct
16 Correct 28 ms 38748 KB Output is correct
17 Correct 16 ms 26460 KB Output is correct
18 Correct 20 ms 30300 KB Output is correct
19 Correct 24 ms 34408 KB Output is correct
20 Correct 27 ms 38336 KB Output is correct
21 Correct 17 ms 26716 KB Output is correct
22 Correct 20 ms 30348 KB Output is correct
23 Correct 24 ms 34388 KB Output is correct
24 Correct 26 ms 38492 KB Output is correct
25 Runtime error 46 ms 50000 KB Execution killed with signal 11
26 Halted 0 ms 0 KB -